JEE Mains · Physics · STD 12 - 13. Nuclei
Consider the following statements : \(A.\) Atoms of each element emit characterstics spectrum. \(B.\) According to Bohr's Postulate, an electron in a hydrogen atom, revolves in a certain stationary orbit. \(C.\) The density of nuclear matter depends on the size of the nucleus. \(D.\) A free neutron is stable but a free proton decay is possible. \(E.\) Radioactivity is an indication of the instability of nuclei. Choose the correct answer from the options given below
- A \(A,B\) and \(E\) only
- B \(B\) and \(D\) only
- C \(A, C\) and \(E\) only
- D \(A,B, C,D\) and \(E\)
Answer & Solution
Correct Answer
(A) \(A,B\) and \(E\) only
Step-by-step Solution
Detailed explanation
\((A)\) True, atom of each element emits characteristic spectrum. \((B)\) True, according to Bohr's postulates \(m v r=\frac{n h}{2 \pi}\) and hence electron resides into orbits of specific radius called stationary orbits. \((C)\) False, Density of nucleus is constant \((D)\)…
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